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Finding the Fourth Proportional to 125,761.69, 173,490.15 and 74,738.31

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Solution

The fourth proportional to 125,761.69, 173,490.15 and 74,738.31 is: 103,102.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,761.69 : 173,490.15 = 74,738.31 : x
  2. Step 2: Convert to fraction form
    125,761.69/173,490.15 = 74,738.31/x
  3. Step 3: Cross multiply
    125,761.69x = 173,490.15 × 74,738.31
  4. Step 4: Simplify right side
    125,761.69x = 12,966,360,242.33
  5. Step 5: Solve for x
    x = 12,966,360,242.33/125,761.69
  6. Step 6: Final answer
    x = 103,102.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.